<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Hangzhou Hiking Tracks - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="data/xihuqu.js"></script>
        <script src="../node_modules/echarts/theme/dark.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));

            $.getJSON('data/hangzhou-tracks.json', function (data) {
                var lines = data.map(function (track) {
                    return {
                        coords: track.map(function (seg, idx) {
                            return seg.coord.concat([seg.elevation]);
                        })
                    };
                });

                chart.setOption({
                    geo3D: {
                        map: 'xihuqu',
                        shading: 'realistic',

                        environment: '#111',

                        silent: true,

                        realisticMaterial: {
                            roughness: 0.8,
                            metalness: 0
                        },
                        postEffect: {
                            enable: true
                        },
                        groundPlane: {
                            show: true,
                            color: '#000'
                        },
                        light: {
                            main: {
                                intensity: 0,
                                shadow: true,
                                shadowQuality: 'high',
                                alpha: 30
                            },
                            ambient: {
                                intensity: 0.2
                            }
                        },
                        viewControl: {
                            distance: 50
                        },

                        itemStyle: {
                            areaColor: '#333',
                            borderColor: '#fff'
                        },

                        regionHeight: 0.5
                    },
                    series: [{
                        type: 'lines3D',

                        coordinateSystem: 'geo3D',

                        effect: {
                            show: true,
                            constantSpeed: 10,
                            trailWidth: 3,
                            trailLength: 0.4
                        },

                        blendMode: 'lighter',

                        polyline: true,

                        lineStyle: {
                            width: 0.1,
                            color: 'rgb(50, 50, 150)',
                            opacity: 0.5
                        },

                        data: lines
                    }]
                });

                window.onresize = chart.resize;

                window.addEventListener('keydown', function () {
                    chart.dispatchAction({
                        type: 'lines3DToggleEffect',
                        seriesIndex: 0
                    });
                });
            });
        </script>
    </body>
</html>